If I can, I generally air-out stuff that O2 can degrade (like rubber) once I feel it's gotten a thorough dose of O2.
My impression is that O2 works quickly and doesn't need to saturate an item for hours on end. Once I treat my boots for 10 min or so, I'll put the tub/boots in an area that they won't be contaminated with new odors... Out on the porch or wherever. (BTW, contaminated boots (like after a sweaty hunt) will contaminate a tub. If you are going to treat boots, you may as well do it in the container that you transport/store the boots in.) Once they air-out for a little while, I will seal-up the tote and the boots are good to go.
Stuff like fabric that O2 cannot degrade, it doesn't really matter if you air it out at all. Just keep treated clothes in a sealed contained of some sort so they aren't contaminated by household odors or whatever. O2 does have a "smell" but it dissipates by the time I dress and walk for a few minutes.
I do treat ScentLok with O2. Here's my take on carbon clothing. I do believe it helps reduce odor, but when you pay attention to the care label, you realize it shouldn't be washed often and they recommend "recharging" in the dryer only a few times per season. So what happens to any accumulating odors that we contaminate the
outside of the garment with? Those odors that will
not be passing through the carbon? I'm sure some of us are more careful about exterior odors than other guys, but I believe we all contaminate the exteriors to one extent or another. Here's an example... the portion of our pants that are stuffed inside rubber boots...We finish our hunt and when we pull out our feet from the boots, that part of our pants have been in that micro-climate of the inside of rubber boots. O2 eliminates odors but it doesn't prevent new odors from forming. As odor free as we can make our boots inside, it doesn't last forever. So we get back to the truck and undress. We stuff those same pants into the tote with all our other carbon clothes. Right then and there, you have contaminated other garments. And if you don't launder and re-charge the carbon, that odor accumulates during each hunt. O2 it before the next use. The goal is to minimize odors as best we can. I don't believe total odor elimination is possible...at least to a deer's nose.
There was a thread on one of these forums and a poster that seemed a lot more O2 savvy than I, said that O2 actually improves the life of the carbon in clothes.
The poster really had great input. I wish I had a link of his post(s) to share.
EDIT: I found that thread Bassboys was the poster I was trying to remember.
https://saddlehunter.com/community/index.php?threads/activated-carbon-powder.3499/