Yesterday My 10 year son suddenly got cold and sneezing lot and nose block after we had pest control treatment same day at my home. Though he was kept away from the area for 6 hours as instructed by the service people. Also we operened the house and let air circulate for 1 hour before son came in. But we all slept in the home only and the pesticide smell was still around.  Is this because of pest treatment he got allergy? What should I do or which medicine to give him ... Please suggest and guide ...he is suffering Thank you very much. Mira