5. Coughing is common. Babies cough and sneeze for the same reasons we do: to clear their nasal passages of something irritating, such as dust, or to move mucus or saliva out of their throats. "Coughing and sneezing are the only ways babies have of clearing their airways⁠—of lint, spit-up, whatever," says Dr.

Do babies sometimes fake cough?

"Around six months, when the fake coughing first begins, babies are really starting to get how the world works," says Vishton. "Your child has noticed that when someone coughs, you're very solicitous, so she's doing it to get some attention." Give her the interaction she's craving—smile and even fake-cough back.

When should I worry about my infant's cough?

Call your doctor if your baby has:

Any cough, and she's younger than 4 months. A dry cough related to a cold (a runny nose but no fever) that lasts more than five to seven days. A dry or wet cough with a cold and a fever of 100 degrees or more.