I feel like I'm the only person here concerned about the fact that that vent 90 almost certainly doesn't go to a vent. Looks like it was probably installed by someone who would try to use a bong made out of PVC.
There is a wooosh here, though I'm not sure it's on you or me.
In case it's you, it is just a bong and doesn't go anywhere. That bit on the bottom is just the stand and the pipe doesn't connect to anything below the floor, it's just sitting in the cupboard.
If you already knew this, then the wooosh is on me lol.
It's an effective way to hide a bong in plain sight because it looks like it's a vent pipe. But I do agree with those saying don't smoke something with a PVC-based pipe (though I'd extend that to say your smoking utensil shouldn't involve any plastic whatsoever other than maybe o-rings, but my glass-only rig is able to seal well without them).
It’s on you. They’re talking about the 90 degree elbow behind the bong that heads upwards.
It’s piped like it’s to a vent, but the location relative to the cabinet opening means the vent for the sink is… between you and the sink
[edit] so their comment is saying “yea I see the bong, but that plumbing work is shit and I can’t get past it”
If you try smoking out of PVC pipe, microplastics will be the least of your concerns. PVC is a thermo hardening plastic, which means it doesn't simply melt but instead starts to decompose when heated. As it decomposes it releases fun stuff like toxins, carcinogenics and chlorine gas.
In the past PVC was everywhere, these days it's mostly gone. There has been a big push to reduce the use of PVC as much as possible. For sewage it's still used a lot because the risks are low, but a lot of other places it's gone.