It depends on where the Oddiyana really was, the question is still unresolved. Two most popular alternatives are in present day Pakistan and in the State of Orissa, in India. In the latter case we have the Oriyan language, which can derive from the ancient language of Oddiyana. About oriyan language see
http://www.omniglot.com/writing/oriya.htm A buddhist from 1400's, Buddhaguptanatha, travelled to Oddiyan. He describes how it had become islamic at that time, the place was then in modern Afghanistan. David Templeman has written about it in
Budhaguptanatha and the Late Survival of the Siddha Tradition in India. In which case we have the languages of Afghanistan like
Pashto .