Comparative evidence

gʷʰreh₁

• OInd. ghrā- 'smell' (Whitney 1885: 43); 'perceive odour'; 'perceive'; 'snuffle' (at); 'kill' (MW: 379)

References

MW = Monier-Williams, M. 1899. A Sanskrit-English Dictionary. Clarendon Press.
Whitney 1885 = Whitney W. D. 1885. The roots, verb forms and primary derivatives of the Sanskrit language. A supplement to his Sanskrit grammar. Leipzig.