How can I tell my friend he stinks?

My boy legit always smells bad. We hit the gym up almost every night and when I give him a ride he stains my seat with the scent. I mean I get it you gonna be sweaty and all but he legit smells like feces. I let him know a lot but for some reason he thinks I'm joking and today he told me something that leads me to believe its actually poop. He goes "My fart smelt so bad once, I had to go to the bathroom and wipe to make sure, to my surprise there was actually poop." I don't want him to take it the wrong way either so any tips on how I should tell him? Or if I should tell him at all?
Just keep saying it like you usually do he'll get the hint
Make sure he knows you ain't playing when you tell em
Don't tell him at all he'll catch the hint
Da fuq? That's nasty yo
Results/Other
Select gender and age to cast your vote:
How can I tell my friend he stinks?
Post Opinion