You should not smell anything foreign inside your coach during regen. There is not a set time for regen. The Cummins folks stated, in town driving with result in increased regeneration. I would take the coach into a Cummins Care shop. Peace of mind means a good nights sleep!
Clay & Pebble.. Miss Butter our sweet Goldie (Jan. 2005-Jan. 2015) Sissy our Border Collie
2012 Providence 42 M. Spartan Chassis, 450 ISL
Ford Edge toad, RM All Terrane, TST TPMS, SMI Air Force One, RVM95....