Berean Study Bible
Or if he touches human uncleanness—anything by which one becomes unclean—even if he is unaware of it, when he realizes it, he is guilty.

King James Bible
Or if he touch the uncleanness of man, whatsoever uncleanness it be that a man shall be defiled withal, and it be hid from him; when he knoweth of it, then he shall be guilty.

American Standard Version
Or if he touch the uncleanness of man, whatsoever his uncleanness be wherewith he is unclean, and it be hid from him; when he knoweth of it, then he shall be guilty.

Darby Bible Translation
or if he touch the uncleanness of man, any uncleanness of him by which he is defiled, and it be hid from him, when he knoweth [it], then he is guilty.

Douay-Rheims Bible
And if he touch any thing of the uncleanness of man, according to any uncleanness wherewith he is wont to be defiled, and having forgotten it, come afterwards to know it, he shall be guilty of an offence.

English Revised Version
or if he touch the uncleanness of man, whatsoever his uncleanness be wherewith he is unclean, and it be hid from him; when he knoweth of it, then he shall be guilty:

Young's Literal Translation
'Or when he cometh against uncleanness of man, even any of his uncleanness whereby he is unclean, and it hath been hidden from him, and he hath known, and hath been guilty: