Can I catch an illness from the passenger sitting next to me or from germs left by a sick passenger on the flight before me?

会不会从坐在我身旁的乘客那里，或由于我之前生病乘客在我座位上留下的细菌而感染疾病？

youdao

I had initially thought that there would be nothing serious because it was fairly common for an old man to catch illness. Therefore, I just wished him a smooth strip then.

本来我以为没什么大问题的，毕竟人老了，有病痛是在所难免的，于是也没有想太多，只是祝他一路顺风。

youdao