Instruction: Answer the given question using the supporting document.

Input:
Question: is it really air tight? if i store chopped garlic will the smell escape?? the real test...
Document: The &#34;Tightvac Coffeevac&#34; has a very tight fitting lid that will neither slide onto the canister nor slide off without depressing a button on the lid to allow air to enter or escape depending on whether you're putting the lid on or taking it off. The canister doesn't create a vacuum (as the name would imply) but it does create a very tight seal so there's minimal exchange of air.
I read a couple reviews that stated it was not a vacuum seal. This is true, by most peoples definition of a vacuum seal as being the removal of all air from the package. What this does is simply air-tight seal. When you press the lid on, holding in the button to allow air to escape, when seated it is air tight. About the equivalent of a coffee can. There is air between the lid and the product, but no air, oils, scent escapes.
I use this to store yeast. It's definitely not air tight, but it will do. I may change my rating if the yeast loses it's activity quicker than if I just used a ziplock.
This does not create a vacuum. It isn't not air tight. There isn't even a seal! It's just a barely close fitting lid. The only thing the valve does us release the pressure that would be caused by pushing the lid on. If you do it really slowly, the lit will go on without releasing the pressure. If you hold the container by the lid with a pound of coffee in it, it takes about 10 seconds for the container to slide out of the lid. Complete sham.
Form follows function really works well here. I fianlly got rid of the latch type stainless steel container I had for so many years that the hinge had stretched and no longer made a tight seal. Coffee was going stale quick. Coffee has essential oils in the been that need to stay fresh and away from to much air. THIS IS SO SIMPLE in design.
I ordered a large batch of tea and also bought this canister specifically to store said tea almost 1.5 years ago. So far, I'm still working my way through the tea and it tastes as fresh as when I first ordered it. Not only does the air-tight feature seem to work but it's also opaque so you don't have to worry about light either. Great product!
Unbelievable easy and efficient! It really works and so easy to use! You can not smell any odor from this container !
This thing rocks to hold things that have a certain smell to them. it may not be like a glass jar with a seal and have no smell at all but if it really stinks it at least tones down the smell quite a bit. Would recommend this to any of my Buds ;)
This has been a super life saver since purchasing a coffee maker with fresh beans. It does exactly what it says it's supposed to do. When I go to grind my beans in the morning, they look, smell, and taste just as you would hope as you take them out of the bag. The container looks really nice as well. This was a very good purchase for the cost!
I have used this to store coffee beans now for awhile and can now say that my old method was better[sealed ceramic jar]  This product does not provide a tight seal thus the beans sour in a very short time. When I bought these containers I thought they created a vacuum which they don't, I wish I would have read all the reviews.
Answer: Is it really airtight.... is kind of in the eyes of the beholder. If I pick the canister up by the lid will the lid move at all, no. same if i pull on the lid, it is quite airtight! Is there a small space where the button you push releases the lids you can take it off .... yes, doesnt let air out but that is the one place a smell comes out, and by comes out i mean so little you wont notice. i just smell through it because what i store is quite pungent... here it goes, Well... I store medical marijuana in mine and it keeps the smell in quite well, of course nothing is perfect but marijuana outdoes garlic smell any day so I would say yes, I apologize if you are offended by the marijuana... Hope this helps!