[taneq]

I seem to recall reading that mosquitos mainly seek out carbon dioxide...

[laurent_du]

I read this as well, and tried holding my breath (I can hold it for several minutes) while walking in the forest, and the mosquitoes still bit me.

[alextousss]

Mosquitoes use different cues (olfactory, CO2 and infrared emissions/heat) depending on the distance to target.