I think mosquitoes are attracted by the heat of human body especially our ears are the main heat emitting source. I'm thinking of simulating an ear by putting a heating element at the end of a funnel like structure and when the mosquitoes are attracted towards during night suck up by a vacuum sucker!I've got one that uses blue LEDs to attract bugs close enough to be sucked in by a fan, and mulched. Not real selective, but the best flying insects, are the dead ones... Seems to work well enough, good assortment of bug parts in the collection tray every week (or whenever I remember to empty it. Fan is a little loud.
CO2 is a byproduct of making beer, so just have to figure out how to contain and store it. Might need to brew several batches of beer (for research purposes), while working out the details. Not sure what you could do with all that beer though, maybe the neighbors might come up with a few ideas...
I don’t know why but I got curious as to how much CO2 gas could actually be obtained using the Sugar yeast method, not sure how much yeast is needed but since it undergoes mitotic reproduction during anaerobic respiration I assume not a lot is needed .Anyways, if I did this right then;A sugar water solution with a bit of bakers yeast will generate CO2. A two liter bottle would deliver about 1 bubble per second (it has been a while).
I would be interesting to know how much CO2 it would take to make a working trap. In very still air it should not take much.
Maybe a body from south of the equator could give it a try