"Out with the old, in with the PHEW!" (while holding one's nose)
Or substitute "PEE-YOO" for "PHEW."
After embarassingly loud burps and farts, I like to say, "better out than in, right?" We're all human--just a gooey, gassy animal.
I dropped that traditional rhetoric when I grew up. Bothers me more when "doG Bless You" is said to me. For any reason other than sneezing, I know most are climatized to the traditional terminology. Any other reason would be judging me.