If you’ve ever wanted to suck on your kid’s pacifier, good news: you not only can but you should. According to a small new study, young children whose parents used their own saliva to disinfect their pacifiers—by sucking on them—are less likely to suffer from asthma and rashes. While the research doesn’t necessarily mean that parents who suck on their kid’s pacifiers can prevent such conditions, researchers suggest that the bacteria they leave on the device can “foster immunity.” Suck away.