disfartening 

When your fart so very disappointing.

My stomach was rumbling so bad but only a squeak escaped. Very disfartening.

disfartening by T. W. Marks November 24, 2018

disheartening 

1: Depressing
2: Mortifying
3: Saddening

Being in the 1000's of edits and still getting "emo" and "goth" is disheartening.

disheartening by [e-mail] January 1, 2006