IR3535 (Insect Repellent 3535) or ethyl butylacetylaminopropionate is a colourless and nearly odourless oil. It can be used on infants/babies and pregnant or breastfeeding mothers, is biodegradable and has a fairly good effectiveness against Mosquitoes, ticks etc.
Background: Developed in Germany by Merck in early 1980s; registered in U.S. in 1999. Chemical name: 3-[N-Butyl-N-acetyl]-aminopropionic acid, ethyl ester. Derived from the amino acid alanine.
Effectiveness: Potential duration of effectiveness: Up to 8 hours. Refer to product label.
Safety: From the EPA: “IR3535 has been used as an insect repellent in Europe for 20 years with no substantial adverse effects. Toxicity tests show that IR3535 is not harmful when ingested, inhaled, or used on skin.” The American Academy of Pediatrics has made no recommendation on the use of IR3535."
Background: DEET alternative developed primarily in Europe beginning in 1998; available in U.S. since 2005. Chemical name: 2-(2-hydroxyethyl)-1-piperidinecarboxylic acid 1-methylpropyl ester. Also known as KBR 3023.
Types: Max concentration currently available: 20%. Protects for up to 8 hours. Refer to product label. In the future, higher concentrations may be available following more toxicology testing.
Safety: Does not damage fabrics, surfaces or materials. For kids, the American Academy of Pediatrics has made no recommendation on the use of picaridin. All repellents should be kept off infants under 2 months.
Note on effectiveness: Considered more effective against flies than DEET."
As to your desirability to Mozzies you may secrete the saccharides and antigens as mentioned above and that makes you a much nicer target for them. This is something that is in your genetic makeup and unfortunately cannot be altered but if needing to lay blame you can point at your parents and ancestors