Yankee Candles ,Glade Plug in's too .There Great for getting rid of the Smell and last a Good amount of Time.
But a Decent Filter ,There should not be No smell ,Has long has the Room,is Air Tight.I have Not much smell from my room,I have people coming and going all the time,your room has something wrong if there smelling the Bud that is growing,You can tell the difference,with Bud for smoking and Bud in flower growing once you been doing it a few year,do you agree.I have been in loads of houses that i know for sure there growing not just smoking,I never say anything.But ,sometimes i feel like saying ,you need to sort your filter out ,But don't want them to become Paranoid.I have a Room with In a Room,I have started to even Prune up in side my grow room,While filters on ,Just because of the smell,This is the time when your most at Risk,when growing In a Country where its Illegal.
Tyke 1973