Mosquito bite research debunks 'sweet blood' myth as heat‑based device marketed for relief

Scientific studies show that female mosquitoes select victims based on a combination of skin‑derived odors, carbon‑dioxide output, body heat and, to a lesser extent, blood type. People who emit higher levels of certain volatile compounds, exhale more CO₂, or have warmer skin are bitten more often. A slight preference for blood‑type O has been observed, but the popular belief that mosquitoes target "sweet blood" lacks any scientific basis.

A compact device, the Beurer BiteX Go, is being promoted as a non‑chemical solution for mosquito and other insect bites. It delivers localized heat via a USB‑C connection, offers two treatment programs (3‑second and 6‑second modes), includes an integrated light for pinpointing bite sites, and can be attached to a keyring. The product is advertised at a 40 % discount on Amazon, priced at €17.99.