I've run glade plug-ins and airwick plug-ins for years in the house and never had an issue. I have a automatic spray system in my son's room that sprays away from the tank every 30 minutes as well and never had an issue. That one did worry me a bit when we got it but we have it sitting on the floor on the aquarium stand base, it's been running in there for 9 months without issues. I would not put a spray higher up, and if it's summer with the ceiling fan running we put the spray container under the bed so it's not picked up in the air as much. Just don't plug a glade/airwick into a powerstrip, or anything at an angle, the oil leaks out, keep it in a wall plate.