Funny thing is, we've all been breathing this stuff in for years....welcome to vape somewhere else
Vapers and publicans alike should not expect non-vapers to passively inhale vape chemicals
PG is widely used to carry diffused scent and medicines...and you'll often find it in air fresheners. That smell of freshly-baked bread in your supermarket? Probably a PG-based diffuser.
Fancy taking in or playing at a gig? Maybe a West-End show? Or what about the local nightclub? Anywhere you see a smoke machine, that's PG/VG again.
If you've used asthma inhalers in the past, that used to be PG.
Fancy freshening up with a quick puff from a bodymister. PG again.
Blocked nose? How about a nasal spray to clear that congestion. PG again.
Damn that pesky fly? Have at it with the fly spray. PG again.
I remember having a rather pointed conversation with a jobsworth at a London gig who objected to my chugging away on my vape during the soundcheck. I was standing right next to the stage smoke machine, which was merrily billowing out clouds of PG - of, I might add, industrial grade rather than pharma grade.
Not to put too fine a point on it, we've all been breathing it in since the 1940s...and no-one seems have have suffered any ill effects as yet. In fact it has slightly antibacterial properties.