quick few questions - firstly, what type of flame did you use to oxidize the mesh....not all gases are created equal, and some burning gases can leave a soot residue behind on surfaces....i've used butane and MAP gas to oxidize before with zero issues anywhere near this extreme.
second - did you cool the mesh after heating it? if so, did you use water? water can cause the mesh to cool too quickly and become brittle and flaky, which in tern could cause you to inhale some metal flake and get a mild case of iron OD....cooling the wick after torching it is fine, recommended even, but use some juice, or even better, some pure VG or PG.
the only thing i can offer other than that is the quality of your mesh, more people than you think are allergic to nickel, and if you were using nichrome wire, you may have been inadvertently poisoning yourself by vaping with it since it has a high nickel content
second - did you cool the mesh after heating it? if so, did you use water? water can cause the mesh to cool too quickly and become brittle and flaky, which in tern could cause you to inhale some metal flake and get a mild case of iron OD....cooling the wick after torching it is fine, recommended even, but use some juice, or even better, some pure VG or PG.
the only thing i can offer other than that is the quality of your mesh, more people than you think are allergic to nickel, and if you were using nichrome wire, you may have been inadvertently poisoning yourself by vaping with it since it has a high nickel content
