According to Muhmmad Asad, the term ‘smoke’ means:
“I.e., a gas – evidently hydrogen gas, which physicists regard as the primal element from which all material particles of the universe have evolved and still evolve” (The Message of the Quran, pg. 932)
The following excerpt is taken from “The Message of the Quran” by Muhammad Asad pg. 629:
ARE, THEN, they who are bent on denying the truth not aware that the heavens and the earth were [once] one single entity, which We then parted asunder?
“It is, as a rule, futile to make an explanation of the Qur’an dependent on “scientific findings” which may appear true today, but may equally well be disproved tomorrow by new findings. Nevertheless, the above unmistakable reference to the unitary origin of the universe – metonymically described in the Qur’an as “the heavens and the earth” – strikingly anticipates the view of almost all modern
astrophysicists that this universe has originated as one entity from one single element, namely; hydrogen, which became subsequently consolidated through gravity and then separated into individual
nebulae, galaxies and solar systems, with further individual parts progressively breaking away to form new entities in the shape of stars, planets and the latters’ satellites.”
Asad, Muhammad (1980). (pg. 932, 629). The Message of the Quran. http://www.islamicweblibrary.com/wp-content/uploads/2020/04/55877864-54484011-Message-of-Quran-Muhammad-Asad-Islam-Translation.pdf