I've done this..and this is how I did it.

1. Turn your shower on really hott..put a towel on the bottom of the door so the air doesn't seep through the bottom

2. Step in the shower..don't be hitting dank or really smelly shit..you'll get noticed..take a hit...blow it DOWN into the shower with the curtain closed.

3. Spray a little cologne or axe or something after everything hit just to be sure...

It doesn't work that good..I accidentally had my grandmas house smelling like dank haha..that's what i get for smoking a bowl in the shower...it works best with a sneaker..but yeah nonethe less a fine way to smoke.

Don't I REPEAT Do Not smoke a fucking blunt in the bathroom..that shit will smell up. A joint probably too..and it's just retarded.

And be careful when you're high..don't want to get water in you're bowl. Haha I've done that a few times.

Don't get too baked..unless you're taking a long shower..just take a few tokes..get a good buzz...keep on the toking.

G/L man