They haven't bothered with labeled release or adding water to soil. Curiosity does have a similar oven+GCMS setup to Viking, which has indeed found funny organi

They haven't bothered with labeled release or adding water to soil. Curiosity does have a similar oven+GCMS setup to Viking, which has indeed found funny organic chemicals in some soil samples: https://en.wikipedia.org/wiki/Sample_Analysis_at_Mars https://en.wikipedia.org/wiki/Sample_Analysis_at_Mars