What is Reddit's opinion of MG Chemicals 402A 134A Super Duster, 285g (10 oz) Aerosol Can (Packaging May Vary)?

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Try local electronic shops. I found mine at an eletrical hobby store. Think it was a brand called mg chemicals. 15 dollars for 20oz. Honestly though dude is right I just use propane now.

Edit ooo look what I have found you MG Chemicals Super Duster, 285g (10 Oz) Aerosol Can https://www.amazon.com/dp/B005DNR066/ref=cm_sw_r_cp_apa_ttCyzbGHZ4SY9

You'll need an adapter. Airsoft innovations makes them.

While I don't want to rule anything completly out, the MSDS says it has a "slight ether smell". I don't think I've ever even noticed a smell myself. Certainly not a burning smell at any rate. It's a relatively safe substance and cans of R134A are also sold as computer air duster (example).