Chatru Campsite - Hampta Pass

I would like to request if it is possible to change the campsite at Chatru during the Hampta Pass trek. The last 1–2 km to the campsite involves walking along the road, where there is a lot of dust due to continuous vehicle movement, and I found it somewhat risky. I also have a dust allergy, so walking through this stretch caused discomfort. If possible, I would really appreciate an alternative campsite that avoids this road stretch.