I think the one we all need to listen to is that from the medical people, who are saying that it is very difficult, if not impossible, to contract it in that way.

我认为我们都需要听从医疗人士的意见，即便有可能，通过吐口水也是很难被传染流感的。

youdao

If the worker does not request so or if continual performance of the labor contract is impossible, the employer shall pay compensation to him in accordance with Article 87 of this Law.

劳动者不要求继续履行劳动合同或者劳动合同已经不能继续履行的，用人单位应当依照本法第八十七条规定支付赔偿金。

youdao

India retains rigid Labour laws that make it almost impossible to fire an employee or to hire contract Labour.

印度保留了其严格的劳动法，这使它几乎不可能解雇员工或雇佣合同工。

youdao

Their complaint: that pharmacy benefit managers, which design health plans for companies and insurers, offer retailers a take-it-or-leave-it contract that makes it impossible for them to compete on drug prices with mail-order houses.

FORBES: There Oughta Be a Law

If an act of nature, a specific supplier or some other uncontrollable act can make it impossible for you to fulfill a contract (and thus open yourself up to legal action) then you should be putting to ink that you are not liable for incomplete work due to these factors.

FORBES: Don't Get Sued: 5 Tips To Protect Your Small Business

This common law concept relieves a party from fulfilling a contract if unforeseen circumstances make it impossible to do so.

FORBES: Collateral Damage