@sri_srikrishna @WBahnfleth @RanuDhillon @joeyfox85 @FilterSchoolAir @LazarusLong13 @healthyheating @DavidElfstrom @citlanx If the room isn't mixed*, lower concentration in one part of the room is offset by higher concentration in another. Since you generally don't know where the infectors are, this basically balances out.**
*ignoring unoccupied space
**assuming susceptible risk linear-ish to dose

@sri_srikrishna @WBahnfleth @RanuDhillon @joeyfox85 @FilterSchoolAir @LazarusLong13 @healthyheat @DavidElfstrom @citlanx 如果房间没有混合*，房间某一部分的较低浓度会被另一部分的较高浓度所抵消。由于您通常不知道感染者在哪里，因此这基本上是平衡的。**
*忽略未占用的空间
**假设易感风险与剂量呈线性关系