General questions. Wash how to clean it?

Hi all doctors Hats off to all soldier s❤️🙏 I have some questions pls reply to this .. If covid mild systom like 3 to 4 time diearia seems it's stoped and next day not diearia becz pationt taken only diaria related medicine after two days he got throat and ear pain he took throatpain tablets for 2 days course and it's got releafe no other symptoms that pationt should go to check for rtpcr or no cough no sneeze no cold no fever ... Pls 🙏 don't mention ur phone no can't pay in dis pendamic situation and I lost job no money ... And another question in plasticbag virus how many day alive and cotton bag how many days? If any grocery brought from shop we can put Spray hand sanitizer to that grocery bag? Milk packet only plain water wash is ok or how to clean that and refregerate? For vegitable and fruits wash how to clean it ? And cloth 3 to 4 layer I mean thik mask is advisable all can't afford N95 mask 🙏 pls reply to my this question s it will help all house hold work women likeme🙏