Does impurity transfer from the forearm to the hand and to what the hand touches if alcohol-based perfume is applied to the forearm and the hand sweats?

The impurity of perfume containing alcohol is a matter of scholarly disagreement. The transfer of impurity from a wet or moist object to a dry one is also subject to disagreement. If a person is stained with impurity and then the impure area sweats, then whatever comes into contact with that impure area from their body or clothes while it is moist is subject to the aforementioned disagreement. There is no harm for someone afflicted with obsessive thoughts (waswas) in adopting the easiest opinions. Impurity is not ruled to have transferred merely by doubt; rather, certain conviction is necessary, for the default state is purity, and it is not removed by doubt.