Not sure if i am in the right place but i have a few questions about menthol drops. 1) is do the menthol drops go bad? I put about 30-40 drops in my current juice, before it use to be super cool throat hit and it stuck around for a few seconds but now it doesnt seem to really give me much of the cool feeling. Maybe i have gotten too use to it? 2) does menthol drops depend on the juice you put it in. Some of my other liquids taste more cool or less cool than the others when adding menthol drops according to the ml of liquid i have.