Hi i need some advise have been doing spray tans for approx a year in a salon. Have been booked for tan party in house. Currently i use my built in extractor fan to clean the room, and when i do party i will not have one to use. do i really need one, i will be spraying 6 people. any views will be greatly apprciated I am thinking about cancelling dont want to cause any damage to the client house!