I'd take it like air freshener. You can spray it in your home, but not right in front of your vives. Or not in the same room if it's a pretty small size. So, likewise would go for incense me thinks. Burn them in your home, but not right by your vives/in the same room if it's small (or not ventilated superbly, as already mentioned).
Don't let anyone, ever, make you feel like you don't deserve what you want. - Heath Ledger