Mosquitoes are the bane of our existence. They invade your space as if they own it. And then, since they are not happy with other food sources, they have to bite you. That red, itching bite is annoying because you are having an allergic reaction to the pest’s saliva. While that is a minor inconvenience, the diseases mosquitoes transmit are not — and could be fatal. Mosquitoes are carriers of several diseases, including West Nile virus, Zika virus, meningitis and a host of others. Not only do these pests make us sick, but they can also transmit diseases, including heartworm, to our dogs.