From smell + -ful. <span class="searchmatch">smellful</span> (comparative more <span class="searchmatch">smellful</span>, superlative most <span class="searchmatch">smellful</span>) (obsolete, rare) Fragant; having a strong scent. 1931, Ion L. Idriess...
Idriess, Lasseter's Last Ride, Sydney: Angus and Robertson, page 222: The <span class="searchmatch">smellful</span> old heathen was snoring dreadfully. (dated) Exceptionally, eminently, very...