ADVISORY: Outdoor furniture almost certainly uses treated wood. That is, toxic chemicals that act as fungicide, pesticide, and moisture-resister, which would be VERY BAD inhale the smoke of burning it… And if it’s pre-i-think-80s treated wood it’s even worse than what they use now. You should also not use treated wood in bonfires and such.

Pipes are cheap, and even an apple (not ideal) is still better than this.

that is not how HIV/AIDS is spread.

You could potentially get herpes from it, but idk how long the virus lives on porous material like wood exposed to the elements. Covid for instance lasts 4 days on wood, but only 1 on cardboard. It lives much longer on, say, plastic, than on clothing.

I’d be much more worried about toxic chemicals because outdoor furniture almost certainly uses treated wood. And if it’s pre-i-think-80s treated wood it’s even worse.

Considering exhaled smoke is just breath with also burnt plant material and byproduct, that’s not too surprising. It’s more like ‘cigarette and marijuana smoke makes visible the cone of particulates of general exhalation through which contagious respiratory illness is largely spread.’