Omg I cant stand the smell of a dead animal coming from one of my vents my husband said he could not…

Omg I cant stand the smell of a dead animal coming from one of my vents my husband said he could not find where it was coming from when he looked up there but it only coming from one of my vents. He said he would look at it when he gets home and to top of that smell my dog keep getting in the trash and peeing in my living room and I just got it to smell good ugh why is this happening to me right now.