give it a soak with some denture tablets

Good old fashioned dawn dishoap let it soak for a while and then rinse out violently

vinegar and baking soda let it soak in there throw water in there shake it up

Try denture tablets. Consider flavourless tablets if you have a plastic bottle in case the flavour sticks

Bottle Bright cleaning tablets. You can get them on Amazon.

I just toss a little baking soda in mine, shake it like I’m mixing a bad cocktail, then rinse. Once on a camping trip I forgot the soda and used toothpaste instead—minty fresh but my water tasted like Colgate for two days.

Few people here seem to like my method, but I'm gonna keep sharing it in the hopes that it helps someone else pack less someday.

• Don't pack a reusable water bottle.
• Take the first single-use-bottle plastic you are compelled to buy, and reuse it.
• When you start to suspect its cleanliness drop it in the recycling bin and buy a new one.

Nothing could be simpler.

This has several advantages.

• Single use bottles are significantly lighter than reusable bottles
• You don't have to worry about cleaning it
• If some overzealous security guard separates you from your bottle it saves you the trouble of deciding when to replace it

Do you already carry chopsticks? I’ve used mine with a cloth to get the corners, when washing in a hotel room.

Chopsticks are great for eating salad! No more chasing the last, slippery leaf around your plate! And you can clean your water bottle.

Activaved charcoal. Just put inside the bottle and let it happen. The smell will go away

Put two tablespoons of baking soda in the bottle and fill it up with water. Let it soak for a few hours, then scrub it with more baking soda and water. If it still stinks after that, throw it out.

Get really cheap vanilla essence. Add a few tablespoons, swirl it around. Make sure you coat the whole inside of the bottle.

A friend worked at a fishmongers and this is what they used to do to get rid of smells

Throw it away, probably molded/bacteria inside that you won't be able to get out.

Vinegar helps too. I use it in my water bottles to wash them before I go on long excursions in the woods. Hit it with hot water and soap then after your done fill the sucker up with vinegar and let it set for 24 hours. Dump it. Rinse. Then let it sit out and air dry. It worked for me, both stainless steel and plastic bottles. Good luck!

Is the smell actually coming from the lid? Sometimes grime gets caught in the rubber or silicone seal.

Open it up, put some hydrogen peroxide inside, swish it around for maybe 30 seconds and squirt it through the top, then rinse it thoroughly. Takes away all the fun and makes it smell like new.

I don't know what causes it but I use denture tablets on mine -- fill it up with hot water and drop 1 tablet in for every 8 oz of water it holds.

Baking soda will remove coffee and other stains and odors. Sprinkle a bunch inside the bottle and scrub with a bottle brush or damp rag, then wash as usual.

This is probably just a temporary fix but when i chew gum and drink water it leaves my water bottle smelling like mint for a while after. Haven’t done any tests to determine how long exactly but you know

I put coffee in mine like a dingus and it tasted terrible. What you can do is add some white vinegar and some hot water, then just let it sit for like 30 mins. It removed the taste completely and now I can happily gulp my water again.

HOT water, shake a lot, repeat a few times

Works for me

I have the same problem, and I think you are probably just shit out of luck sadly.

Try denture cleaning tablets, they work wonderful to help remove the smell

Take apart everything you can, including removing the lid seal etc. Soak every part in hot to boiling soapy water, the hotter the better, for at least 15 minutes, add a sterilising tablet, the kind you would use for baby bottles, let soak for as long as possible then wash as usual. You could also add some bicarb in, before adding the sterilising tablet.

Used this method for years on multiple different kinds of bottles, including plastic, and it has always seemed to work.

Maybe bar keepers friend

The flavor isn’t on the bottle, a good scrub with vinegar/baking soda or a coffee machine tablet would certainly remove all the flavor from the bottle.

The smell/flavor is either in the plastic of the lid or more likely, the straw. If you’re quite sensitive to smell/flavor, possibly the gaskets. I had one taste like soap, well, it still does if I leave the straw on the lid. Take the straw off/get a new one/ swap to one without it and it very likely will be fine.

The plastic is far more permeable by smells/chemicals than the metal ever will be. It is certainly somewhere in the lid assembly, whether that’s the gasket straw or lid itself you’ve gotta figure out.

If it’s really that terrible, consider swapping the entire lid assembly.

Baking soda + water, let sit.

if it’s plastic you’re kinda out of luck, had a similar issue with a plastic bottle i had, soaked it in dawn for a bit too long, tasted like soap forever, so i just trashed it. amazon has some good metal bottles has an alternative to the plastic ones!

The more chemicals you apply to plastic, the more unstable you make it, and you risk consuming the chemicals in the plastic as it deteriorates. A strong detergent can make it unsafe, and you used harsher chemicals that that. Toss it.

I'd toss it, or recycle it. Water bottles aren't that expensive. I lose/break them all the time.

Metal containers. Always

Try white vinegar wash

Put some bicarbonate of soda in it and add hot water. This kills bacteria and lifts dirt. I have used it on flasks for decades.

Put itnin a glass with warm water and a denture cleaning tab.

I would soak in water with baby bottle sterilizing tablets and scrub with a toothbrush

Take out the rubber pieces with a popsicle stick, then clean them with dishwashing detergent. Depending on the brand, you might be able to buy a replacement for the rubber parts, since it’s unlikely to fully clean them at this stage, and in the future clean them more often.

All of those rubber gaskets need to be removed every so often and possibly just replaced. It's black mold. It's probably better to just replace the bottle at this point.