Of course, anyone would try creative method to help your baby sleep soundly(quality sleep) and peacefully when you are also deprived of quality sleep.
Here are some sound to help baby sleep which include hair dryer sound:
-White Noise for Babies
-Ocean Surf Sounds
Free sound to help baby sleep
Well, looks like this mother make use of hair dryer sound to help her baby sleep:
youtube baby sleep hair dryer sound