It’s my favorite season: iced coffee season. Well, technically summer is my least favorite season, but iced coffee season is a season of the spirit. Everything is better during iced coffee season. Except for the smell coming from my metal drinking bottle. For making iced coffee, I prefer to use a wide-mouth S’well bottle, both because I’m super basic, but also because I find the opening wide enough to easily fill it with ice and set my pour-over brewer on top to make a quick Japanese iced coffee. Unfortunately, my bottle, which is designed to hold water, tends to absorb the smell and flavor of the brew, making it less than ideal when filled with… well, any other liquid. Luckily, I’ve discovered a few different methods for deodorizing it, ranging from the simple to the intense.

The dishwasher is completely out – HAND WASH ONLY, the bottom of the bottle warns me – but as long as I don’t let the coffee sit for a few days, I can usually get the smell out again by scrubbing it with a bottle brush and some dish soap. I already had a bottle brush lying around, since I have small children who like to drink out of weird and hard-to-clean plastic cups, but if you don’t, they’re a good buy – you can also use them to clean wine glasses, highball glasses, and anything else you can’t get your hand into.

I can’t always get the water from my kitchen tap hot enough to clean things effectively, so I use my gooseneck kettle (the same one that helps me make those aforementioned ice-cold pour-overs) to add a little boiling water to stubbornly grimy pots or pans. The same method can help get sticky smells out of a metal water bottle , and since the things are designed to keep liquids both hot and cold, you can pour in the boiling water, put the lid on, and let them soak for as long as you need to let the heat do its work—overnight if the timing works out, but a few hours is usually enough. Add a few drops of dish soap in there at the same time to maximize their cleaning power.

If boiling water doesn’t work, you can also soak overnight in a mixture of white vinegar and hot water. Rinse the bottle, fill it about a quarter full with white vinegar, and top it up with hot water (tap water is fine, but boil it for a little extra kick). Put the lid on, shake the bottle, and let it sit overnight. Rinse it well before using it the next day. The vinegar smell should not linger and the sour coffee smell should be gone.