Miele STB 20 Turbo XS Operating Instructions Manual page 9

Do not vacuum up anything which has been burning or is still

glowing e.g. cigarettes, ashes or coal, whether glowing or apparently
extinguished.
Miele cannot be held liable for damage caused by incorrect use or
operation or by non-compliance with these Warning and Safety in-
structions.
en - Warning and Safety instructions
9