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> Put your nose in your epoxy hardener bottle. Breath in. IF you can smell
> the epoxy, you need protection. (The bottle has less than 1/2 sq ft of
> surface area your boat hull has 33 sq ft - epoxy fumes come off the hull
> about 66 times as fast until the epoxy cures.)
Dangerous Advice George. One of the first things they taught us in the biological labs at college was "DON'T STICK YOUR NOSE IN ANYTHING AND SNIFF". As this is an excellent way to damage/kill yourself.
The accepted way to smell any liquid chemical (if you really must)is to hold it away from your body at about chest height and wave your had over the top of the bottle, and sort of waft the fumes upwards. Even this is dangerous practice and should be avoided if possible.
Trying to judge the need for protection by smell alone is foolhardy at best, some chemicals are odourless and deadly.
Remember there are kids reading this stuff who don't know any better.
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Guillemot Kayak - High Performance Wooden Sea Kayak Designs