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Hot atmospheres pervading galaxy clusters, groups, and early-type galaxiesare rich in metals, produced during epochs and diffused via processes that arestill to be determined. While this enrichment has been routinely investigatedin clusters, metals in lower mass systems are more challenging to probe withstandard X-ray exposures and spectroscopy. In this paper, we focus on very deepXMM-Newton ($\sim$350 ks) observations of NGC 1404, a massive elliptical galaxyexperiencing ram-pressure stripping of its hot atmosphere while infallingtoward the centre of the Fornax cluster, with the aim to derive abundancesthrough its hot gas extent. Importantly, we report the existence of a newfitting bias - the "double Fe bias" - leading to an underestimate of the Feabundance when two thermal components cannot realistically model the complextemperature structure present in the outer atmosphere of the galaxy.Contrasting with the ''metal conundrum'' seen in clusters, the Fe and Mg massesof NGC 1404 are measured 1-2 orders of magnitude below what stars andsupernovae could have reasonably produced and released. In addition, we notethe remarkable Solar abundance ratios of the galaxy's halo, different from itsstellar counterpart but similar to the chemical composition of the ICM of richclusters. Completing the clusters regime, all these findings provide additionalsupport toward a scenario of early enrichment, at play over two orders ofmagnitude in mass. A few peculiar and intriguing features, such as a possibledouble metal peak as well as an apparent ring of enhanced Si near the galaxycore, are also discussed.

The cycle of metals in the infalling elliptical galaxy NGC 1404