MCS Referral and Resources MCS Referral and Resources, Inc., is a non-profit organization engaged in professional outreach, patient support and public advocacy devoted to the diagnosis, treatment, accommodation and prevention of Multiple Chemical Sensitivity disorders. Website: www.mcsrr.org/Phone: 410 889-6666Mailing Address:6101 Gentry LaneBaltimore, MD 21210Date Updated: 11/8/2013