I don't think and want to believe that after a couple of hours snake excrement particulate doesn't get into the air and then into the lungs of my family.  Even when I remove it as quickly as possible, there's still times when it could have been sitting for hours (while we sleep).

I would think that there would be a way to provide some kind of air filter.

The idea:

A closed top except two portions, possibly 4"x4" for one, the other being the size of the air filter replacement cartridge

air filter cartridge

bought from just about anywhere.  On the other side, a computer fan or something like it, blowing air in to the tank, possibly with a potentiometer to adjust the fans speed.

If your fan is a 12 volt and ~ 1/4 of an amp (most computer fans) then a 100 ohm potentiometer will work fine.  And if you're feeling fancy you can wire in a switch as well, all of it on the easy side of electrical work.

This seems like it would be an easy solution to a stinky problem.

I've looked at the filters on amazon and they range anywhere between $8 to $50, but I'd guess all we would need is something in the lower range.

As for the fan(s),

muffin fans

you can find them pretty cheap, and considering that you don't need high rpms to move enough air they should be on the quiet to nearly silent side.  There's plenty of tutorials out there to connect a computer fan to a wall wart type of power supply.  The voltage will depend on the fan in question though, so I can't recommend anything in particular right now.

The problem with all of this is humidity, it'll be harder to keep it at exacting levels and keep the air flow constant.  This is something I'm still trying to figure out.  I would like to try and avoid setting up an automated misting/fogging system with a humidistat

Humidistat

to control all of it.

Not because I don't think it'll work, but it'll be expensive in totality and as it's diy (by my own admission) will be prone to not work.

Maybe it's worth the price as the animal and my family will be better off though.  Less air particulate for us and a humidity controlled environment for my snake.

Thinking a little more about this: if I were to mount the air filter to the fan itself and have the fan sucking air out of the tank via a hole on the other side of the top it might make maintenance a bit easier as it'll be all one unit.

After looking, the cheapest ammonia sensor seems to be this one: http://www.pacificsentry.com/CAFO.html at $25 sans shipping, so probably $30.  And it's strictly a visual sensor.  It would be nice to have something that even blinked a little led light when ammonia is detected.  I'll have to look into that a good bit more.

For refrence: spdt relay wiring explanation: https://www.youtube.com/watch?v=tCA7fJFH4qE