Because if you touch somewhere where been virus,when you touch your face it can easily go in through breathing canals and you will get Virus
The answer is modern. Adjectives are defined as <span>a word/words or phrase/phrases naming an attribute, added to or grammatically related to a noun to modify or describe it. In other words, it describes a noun or modifies a noun. In this sentence, modern modifies or describes the noun Olympics. Greece, Athens, and Olympics are not adjectives because the are nouns in themselves.</span>