It is that time of the year where everyone gets sick and have to take time from work. It is the "Common Cold" with all the good advises and remedies possible.
However, in some countries, the practice seem to promote it. For example, in Germany people cough on their hands, re- use the same tissue over and over and puts it in the pocket. It is a common practice and one gets used to seen it. No need to critique, but to accept our cultural differences.