An awesome video has emerged of a father giving his baby his mother's dirty shirt to make him stop crying.

The footage, shot earlier this month in San Francisco, CA, USA, shows the three-month-old boy immediately calming down as he smells his mother's smell on the shirt.

"I was watching him one day while mom was running errands and he got real fussy," the father wrote online.

"Another dad-friend of mine suggested placing one of mom's dirty shirts from her hamper on his face, so he could recognise the smell and calm down."

"I had no idea it would work so well! I hope this video is shared enough to help another dad out of a fussy situation with their little one," he added.

Our 3 month old is a real mamas boy. I (dad) was watching him one day while mom was running errands and he got real fussy. Another dad-friend of mine suggested placing one of moms dirty shirts from her hamper on his face, so he could recognize the smell and calm down. I had no idea it would work so well! I hope this video is shared enough to help another dad out of a fussy situation with their little one.