Nineteen hundred years ago, the twenty-five thousand pupils of Rebbe Akiva all died in the days of the Omer between Pesach and Shavuot. This was a punishment for not treating each other with enough respect. The majority of the days Omer are in the month of Iyar. Thus Iyar is a time for us to work on improving respect for others.
Rabbi Sinclair’s book on the weekly Parsha – https://www.israelbookshoppublications.com/store/pc/The-Color-of-Heaven-54p652.htm