Well, yes it is possible to taste garlic if it has been rubbed on your feet. Roughly 20min after application you should get a taste of garlic in your mouth. Another interesting fact is if you have a cough, if apply vics vaporub to your feet then put your socks on, a short time later your coughing will stop. It has been tried and tested by many. Try it next time you have a tickly cough.