Delhi Metro Rail Corporation [Dmrc] — Metro has too many mosquitoes

Address:

Najafgarh

I am traveling from dwarka to najafgarh via metro-gray line. And for a three station route, the metro has been standing still at dwarka station for last 15 mins with doors kept wide open. This has lead to mosquitoes come inside the train and everyone in my sight is struggling to stay in the metro. Is this being done intentionally, are metros who cover hardly 5 minutes roite supposed to stand for 15-20 minutes at every station. Are waiting to catch dengue/ malaria or something.