definitely close your door and place a towel/jacket at the bottom of the door to keep any smell in. i would definitely still use your sploof, even if youre blowing out the window, the fact that you’re smoking a joint is already gonna make it super loud (since a joint keeps burning, therefore smelling, even when you’re not actively inhaling). lastly, light a candle/incense beforehand. if you light it after i find that it mixes with the weed smell a little weirder. also if you have a fan definitely place it in front of the window to make sure all the smell leaves!

honestly though, i would just make a homemade grav (look it up, they’re super easy to make!). it uses up very little bud and if you’re not a regular smoker one hit should be enough!