Puzzy Farts

When I finished with this Kimchi, pulled jj out, resting and panting, dom still on my jj, all of a sudden I heard some air puffing noise from her pussy, like some air coming out from a loose ballon  Then puff the second time! How did she do it? Did my jj kept pumping air inside her pussy? Bros, share your experience on this Pussy farts I did not smell anything bad like farts though