धूमेनाव्रियते वह्निर्यथाऽऽदर्शो मलेन च। यथोल्बेनावृतो गर्भस्तथा तेनेदमावृतम् ॥

dhūmenāvriyate vahnir yathādarśho malena cha yatholbenāvṛito garbhas tathā tenedam āvṛitam

As a flame is enveloped by smoke, as a mirror by dust, as an embryo is wrapped by the amnion, so This is enveloped by it.

In plain words: Krishna says desire covers wisdom the way smoke covers a fire, dust covers a mirror, and the womb's covering surrounds an unborn baby.