Since fundamentalist Christians enjoy whispering insults into helpless animals ears, it’s best to keep your pets well away from them during their visit. Threats of hell and damnation can have a considerable impact upon a dogs psyche, making him more prone to the shits and farting.
from http://www.fartnoises.info/farting-dogs-avoidstop-dog-fart-mayhem-in-7-easy-steps.html