If smoking meth gives you those problems it must be imo very bad meth, since its only vapor and I don't even feel that vapor entering my throat or lungs and never have any probs due to smoking.
Few quick questions to check quality, very accurate!
a) does once your crystals melt into liquid and you stop heating, the liquid turns to crystal right away or does it take some seconds or longer before it turns to crystal, perhaps even smoking on a bit after you have stopped heating?
b) once at some point the liquid has fully turned to crystal again, does the crystal now have a different color than before having melted it the first time or not? And if so, from which color to which did it change? And how big is the difference in color in %?
c) once you smoked a bowl, are black markings left on the inside of your bowl/top of your tin foil?
d) does it taste nice?
e) is the cloud you exhale a big or small cloud, and is it like normal smoke or different? And if different, how and in which way? f.e. very white, much more white smoke than normal smoke,...?
f) how many crystals do you smoke and how many tokes before you have strong enough effect and how much/often you use?
g) what do your crystals look like (color (or not) glass or not shape size, anything?
Cheers!