Especially the trip to Hana. For the most part though, I’ve stayed at one end of the island and just parked myself on the beach and occasionally take day trips to the various tourist spots and/or whale watching/snorkeling trips. For me, Maui has a good balance.
Lanai and Molokai have essentially one main road from end to end IIRC.
I was thinking more about the air quality, but I just checked it and the air looks pretty good. Although, as you get closer to volcano, which is/was a popular tourist destination BTW, the air quality is approaching “moderate.”