  The role of data in building AI systems has recently been emphasized by the
emerging concept of data-centric AI. Unfortunately, in the real-world, datasets
may contain dirty samples, such as poisoned samples from backdoor attack, noisy
labels in crowdsourcing, and even hybrids of them. The presence of such dirty
samples makes the DNNs vunerable and unreliable.Hence, it is critical to detect
dirty samples to improve the quality and realiability of dataset. Existing
detectors only focus on detecting poisoned samples or noisy labels, that are
often prone to weak generalization when dealing with dirty samples from other
domains.In this paper, we find a commonality of various dirty samples is
visual-linguistic inconsistency between images and associated labels. To
capture the semantic inconsistency between modalities, we propose versatile
data cleanser (VDC) leveraging the surpassing capabilities of multimodal large
language models (MLLM) in cross-modal alignment and reasoning.It consists of
three consecutive modules: the visual question generation module to generate
insightful questions about the image; the visual question answering module to
acquire the semantics of the visual content by answering the questions with
MLLM; followed by the visual answer evaluation module to evaluate the
inconsistency.Extensive experiments demonstrate its superior performance and
generalization to various categories and types of dirty samples. The code is
available at \url{https://github.com/zihao-ai/vdc}.
