Be very careful with a forced air pump, I don't know about a Hydroponic pump, but if it is possible to get any oil from a pump it will just coat your lungs. My scuba courses said it was a good way to hurt yourself badly. The oil does not come out of your lungs easily, or at all.

: I might have avoided smell in the house from the epoxy but I
: finished the kayak with two part polyurethane which is a more
: serious issue. With the fans I didn't smell a hint of it
: elsewhere in the house, and it is powerfully smelly stuff. I
: have on other occasions used solvents in the same part of the
: basement, and received complaints from the other half about
: smell elsewhere, so I know that in our house the two part
: polyurethane application to a kayak would have been a serious
: problem without the fans.

: more or less on the topic of applying smelly stuff in the house,
: for breathing during application of the polyurethane, I hooked
: up a respirator to a plastic pipe normally used for sump pumps,
: and put the intake end outside the house through a second
: window. A normal organic vapor cartridge hardly touches the odor
: from the that stuff. The plastic pipe was a bit of a pain to
: drag around during the work, but it did the job if somewhat
: inconveniently. If I do another kayak with this finish, I will
: rig up a pressurized air supply, likely using a hydroponic air
: pump. That way, a small diameter air tube can be used which
: would be more easily moved about. OTOH, one could just buy a
: supplied air respirator system, but they are expensive.

: AE