Who said "Laughter is infectious and spreads happiness."?

This quote is attributed to Mickey Mouse.

Laughter is infectious and spreads happiness. - Mickey Mouse

"Laughter is infectious and spreads happiness."

Mickey Mouse Humor

"Hot dog!"

"Oh boy!"

"Gosh!"

"That's swell!"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."