Will touching a dry impurity make one impure?

Q: I am currently abroad and I have been doubting everything recently. I was recently told that theres a potential of lard (pig fat) being used in the making of bread here in some of the bakeries. My friends eat that bread because they are non Muslims.

My question is, if they were to eat the bread which is a dry entity and then touch me with it after they are done, would I become najis, or does impurity only travel through wetness? 

A: You will not be impure. But as a precaution wash your hands.

And Allah Ta'ala (الله تعالى) knows best.

Answered by:

Mufti Ebrahim Salejee (Isipingo Beach)