My personal opinion, I'm not a doctor so take it with a grain of salt.. but mercury, as it did in my case anyway, tends to do the opposite, weaken your muscles, numb them, and make you heart slow down, feeling quite weak, not an adrenilin rush sensation at all. It'll make your hands numb, your legs numb, everything, foggy head etc.

However, plastics/solvents might make you feel kind of high and give you a trembling nervous rush sensation. Plastics are all essentially petroleum deriviative synthetics and as a plastic material they are inert but when mixed with the saliva in your moutth they break down ever so slowly into their original chemical components. For the same reason, aspartame is quite dangerous since it is composed of a wood alcohol synthetic, but your body breaks it down into the original wood alcohol once ingested, which cause blindness and cancers.