From <span class="searchmatch">smogless</span> + -ness. <span class="searchmatch">smoglessness</span> (uncountable) Absence of smog....
From smog + -less. <span class="searchmatch">smogless</span> (not comparable) Free from smog. 2023, C Pam Zhang, Land of Milk and Honey, Hutchinson Heinemann, page 9: The wind nipped...