Accepting a bottle of liquid for use in a "vape pen", which is anything not a cig-alike, makes the receiver guilty of a class c misdemeanor if the receiver knows the producer does not have a manufacturing license from the Indiana Alcohol and Tobacco Commission. The producer who gave, or sold, the liquid is guilty of a class a.
This includes DIY, so mix your own and you are guilty of a class a and a class c.
If you don't mind being a criminal, then it does nothing. If there is a big push for enforcement after Monument Vapor and their manufacturing company don't see an increase in sales...that will be when it gets interesting. (Don't forget, the AG is pushing for these identical bills too.)