Please help!

Ftm here, idk what can I do to help my baby. He is 6 months and up until today he has never been sick. Yesterday while I was at work my husband was laying with the baby in front of the fan blowing directly at them and today he woke up with a runny nose and so very fussy. What can I do to help him get better? I’ve been suctioning his nose but he just keeps getting more little booger’s idk what else to do 😖