After reading the CDC info (thanks for that link!) it seems to me that it's not just a brake cleaner issue --- but a CHLORINE and Welding (high heat) problem.... I didn't find any info relating to just the chemicals in Brake Cleaner and nothing mentioned about Argon gas. So for me, at least, I'm not going to just discontinue the use of brake cleaner - but any product with chlorine in it.
I'll hit AirGas supply today and ask them what they know - if anything - about this bad combo. Would be interesting to see if the sales people there have any warnings to add.
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