smokeless

English

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smokeless tobacco

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Etymology tree

English smoke

Proto-Indo-European *lewh₁-

Proto-Indo-European *lewHs-der.

Proto-Germanic *leusaną

Proto-Germanic *lausaz

Proto-Germanic *-lausaz

Proto-West Germanic *-laus

Old English -lēas

Middle English -les

English -less

English smokeless

From smoke + -less.

smokeless (not comparable)

Without smoke.
smokeless fuel

smokeless gunpowder
- 1957 April, “The Clean Air Act and the Railways”, in Railway Magazine, page 222:
  The position will then differ little from that under previous legislation, but any infringement of the law will be much more noticeable in smokeless zones.
(firearms) Of a gun, that does not produce smoke when fired.
- 1971, Thomas G. Burton, Ambrose N. Manning, editors, Folksongs II, Research Advisory Council of East Tennessee State University, page 19:
  I run home, jumped in the bed,
  Laid a forty-four smokeless under my head.
Of tobacco, to be consumed through methods other than smoking.

without smoke