dude you are worrying and frekaing out way to much....im not trying to be a dick..im just trying to let you realize that its FINE man....i KNOW you dont wanna get caught..im just like you but ive calmed down alot.....i used to freak out like CONSTANTLY but dude now ill hit the gravity bong in the bathroom....shower.....and then 20 min later my mom walked into the bathroom after i was done and it was fine...dude if i were you i wouldnt even worry about spraying anything man...ur fine lol 7 HOURS is PLENTY of time....me and my bro will sit in my room at night and blow out the window and not spray but 1 spray of curve colgne..and be fine dude....and thats like 6 hrs later when my mom usually wakes me up....but your fine man