Antonyms of adj smokeless

1 sense of smokeless

Sense 1
smokeless (vs. smoky) -- (emitting or containing little or no smoke; "smokeless factory stacks"; "smokeless fuel"; "a smokeless environment")

smoky (vs. smokeless) -- (marked by or emitting or filled with smoke; "smoky rafters"; "smoky chimneys"; "a smoky fireplace"; "a smoky corridor")
        => blackened -- (darkened by smoke; "blackened rafters")
        => smoking -- (emitting smoke in great volume; "a smoking fireplace")
        => smoke-filled -- (containing smoke; "smoke-filled rooms")

Similarity of adj smokeless

1 sense of smokeless

Sense 1
smokeless (vs. smoky) -- (emitting or containing little or no smoke; "smokeless factory stacks"; "smokeless fuel"; "a smokeless environment")
       => smoke-free -- (free of smoke; "smoke-free offices and restaurants")