下水道的通畅极为重要！此前有团队已经在粪便里发现新冠病毒。新冠病毒并不一定通过消化道传播感染，而是因为下水道中污染物干了，又通过空气、气溶胶传播，人们吸入造成感染。
Is it important to ensure proper functioning of the plumping system?
Yes, it is. Medics have found novel coronavirus in human fasces. The virus does not necessarily spread via digestive tract but it could be that people contract the virus when breathing in the air or aerosols released by the dry waste in the plumbing system.
