One dealer I was at had a separate body shop on the same property... they would do raids on the tool benches after hours and throw away all silicone products including the detail boy's tire dressings... The stuff would make it around the corner into their building and then into the high dollar paint booth and ruin a days work.This example would be on the substrate. ... THO, if it's in the air (which you'd be amazed how that stuff travels) it can easily get in your air feed unless you are filtered up the ***.
This is why Jer says, just remove any and all of it from your property. It's a real heartbreaker.