Conclusion
The best way to prevent yourself from having nasal congestion is to practice good hygiene. Wash your hands regularly with soap and water.
References;
[1] https://my.clevelandclinic.org/health/diseases/8610-allergy-overview
[2] https://www.medicinenet.com/common_cold/article.htm
[3] https://vicks.com/en-us/treatments/how-to-treat-a-cold/how-to-stop-a-runny-nose
[4] https://www.cdc.gov/healthywater/hygiene/etiquette/coughing_sneezing.html
[5] https://medlineplus.gov/druginfo/meds/a682159.html
[6] https://www.drugs.com/naproxen.html