Anyone else's baby cough alot?

Nova
He's almost 3 months now, he's always coughed but he's been doing it alot more the past few days.. nothing else seems to be wrong with him though, he's a very happy baby. Sometimes it sounds like he's trying to laugh when he coughs, it's so cute haha. But just curious if anyone else's baby does this? I'm a ftm so every little thing worries me.