Proto-MSA

*dVm- - pus (Kogan 2015: 551)

ousted from its original semantic slot by Proto-MSA *ḏVr(y)-

PS
*dam-, *ˀa-dam- - blood (SED I No. 50)
*ˀadam- with ˀa­- prefixed is reconstructed on the PS level.

Mehri
dəm - pus (ML 71)
Jibbali
dihm - pus (JL 39)
Soqotri
dem - pus (CSOL I 528; CSOL II 447; Simeone-Senelle–Lonnet 1991:1454)