ebooks have a big advantage...they are hypoallergenic?
...kinda like the genetically modified hypoallergenic calico cats referenced on an episode of "Big Bang Theory"...which also makes a number of Kindle references over the years of the show.
On a serious side, over the years I have actually developed a more pronounced intolerance to the musty/molds or whatever allergens might encamp within our loved books over the years, especially poorly cared for used books and used books have always been my preference.