It is an argument among the posikim. I believe it is discussed in aven haazer (shulan aruch). The general halacha is that it is muttar. But some still say it is a good idea to do it in order to avoid potential touching.
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It is an argument among the posikim. I believe it is discussed in aven haazer (shulan aruch). The general halacha is that it is muttar. But some still say it is a good idea to do it in order to avoid potential touching.