Allergy

For some reasons Sasha had a runny nose that lasted for more than 3 weeks. I finally took him to the doctor and was told he might have allergy. Sasha was prescribed a nasal spray that miraculously cured his runny nose in just 3 days. We have already used air purifier with HEPA filter in the house but now I am contemplating to buy a Dyson vacuum cleaner to help capture dust and loose allergen.