Thiol
Drapetsona : Oil One the possible source of strong odour, environmental pollution
Parents and even more so grandparents of students of Drapetsona's Second Primary School - at the junction of Georgiou Afara and Eleftherios Venizos Streets - may not be aware of methanethiol (methyl-merkaptani in Greek) but they can certainly recognise the odour in the air that they breathe.