mal(means bad, not good (of condition)+aise(sounds like ease)....and someone who is not at ease is one who is feeling ill
Think of malaria
mal hai tu... always making me uneasy. Mal hai tu!!!
I ate a jar of MAYONNAISE. Now I feel sick.
Malaise in mind when wearing maile(dirty) se clothes.
Malaise- AALAS aalas lagta hai means dull dul whn some one is feel ill. so malaise = uneasiness or vague feeling of ill health.