Good Day, Got My Appartment Painted And After 24hrs, We

Good day, got my appartment painted and after 24hrs, we came in . It isn't so ventilated and suddenly noticed our 2year old sniffing, sneezing and feverish. Can that be the cause? Though we are already seeing the doc. , she's been on antibiotics injections and antifugal drug recommended. Pls advise. tx Hif.