Tech Guru wrote@Stygmata
Frequent Air Blowing , will create static charges in the Laptop/Desktop and will damage the components on the long run. I prefer the hard way : Can of Compressed Air , Piece of Cloth, Dissembling the Fans.
you said it , on the long run ..also as long as the user is touching a metal frame , laptop metal hinge , even the antenna cable inside the laptop static charge should be minimal ..
but of course disassembling the laptop yields the best results but take more time and expertise