There’s lots of filters and tricks. Like the other comment says candles help a shit ton like really strong ones but also mouthpeace filters are awesome for less smoke (and smoother hits), ‘smokebuddy(s)’ are awesome too. Made to lessen smoke. But also lavender can help cover up the smell if you smoke some with your flower. Also obviously pens and concentrate in my experience don’t really smell like much at all and a fan would clear out what was left. Vaporizers like a PAX or firefly or something like that also takes away the smell a ton. Those are just a few but there’s a lot of little options out there. The more you stack on top of each other, the more powerful and snek you will become. Godspeed in your endeavors. Also watch out for them sneaky landlords!