A nice cold beer can do wonders on a hot summer day. But be prepared for unwelcome visitors. Mosquitoes apparently like beer and particularly the people who drink it, University of Guelph researcher James Heal said in an interview with CTV. Heal, who works in the School of Environmental Sciences, said that mosquitoes are attracted to the carbon dioxide in beer and other carbonated beverages such as cider and sparkling wine. They also home in on the temperature of human skin, which becomes warmer and more appealing after a person consumes alcohol. So more beer could mean more bites for unsuspecting drinkers.