Pacifiers cause colic.
Swallowing extra air during feedings can cause painful gas and aggravate colic.
Does pacifiers help with gas?
“Almost all babies will find some baby gas relief by sucking on a pacifier,” O'Connor says, because the sucking action releases endorphins that will soothe them.
Do babies take in air with pacifier?
Babies swallow air all the time, under various circumstances. It could happen while they are crying, laughing, breathing through their mouth, swallowing saliva, sucking on a pacifier, etc. Air swallowing becomes a problem when it happens before and during feeding.