There was about him a contagious cheerfulness, good-humor, and honesty.
Her humor was contagious and Richling was ready to catch it.
I am not able to determine whether it is or is not contagious.
The fever had now begun and, like all other contagious diseases, it soon spread.
His refined, magnetic enthusiasm is contagious, and at times most fascinating.
They say it's not contagious, but there's no use in running unnecessary risks.
And Fanny fully shared the joy of her friend, joy is so contagious.
Phœbe brightened again at the woman's words of contagious cheer and hope.
If cleverness, like fever, were contagious, it had been all very well.
The disease is contagious; it's easy to acquire and hard to retire.