yes last week my delightful hubby farted before he got into the car and when he shut the door I neally gagged it was absolutely disgusting the pig!!! Having said that I do some stinkers myself and have also made him gag and nearly throw up!!
I know why they don't smell because mine never do. The reason they smell is if they have been maturing in the bowel for a while, basically being soaked in the solid matter, the more solid matter that they soak up, the more they smell. The smell is actually particles of excrement that are going up your nose. Your husband must be like me, takes regular lav breaks (I drop the kids off at least once a day, most times it's 2 or even 3 times) and he mustn't store them up for very long.