I toss it. I'm already taking a risk bringing the vape and the herb outside of the house. I like to minimize any additional unnecessary risk, so I toss the AVB and clean the vape (if I'm using while I'm out, I usually have the OG Davinci) as thoroughly as I can. I already have about 20 g of AVB at home, plenty of fresh bud, and some Green Dragon. That small amount of AVB just isn't worth the extra risk.